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Old 06-27-2012
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Default Different degrees burns question

A 33-year-old man incurs thermal burn injuries to 40% of his total body surface are in an accidental fire while repairing a fuel storage tank. On physical examination, the skin of the trunk, neck, and face is pink, shows blisters formation, and is painful to touch. The skin of the arms is white and anesthetic. Skin grafting is necessary on the arms but not to the other injured areas of skin. Which of the following structures is most likely absent from the sites that required skin grafting?

a) collagen fibers
b) dermal appendages
c) epidermal basal layer
d) keratin
e) macrophages
f) nerves
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Old 06-27-2012
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ans: nerves

First-degree burns: the skin is red, painful and very sensitive to touch. The damaged skin may be slightly moist from leakage of the fluid in the deeper layers of the skin.
Second-degree burns: the damage is deeper and blisters usually appear on the skin. The skin is still painful and sensitive.
Third-degree burns: the tissues in all layers of the skin are dead. Usually there are no blisters. The burned surface can appear normal, white, black (charred), or bright red from blood in the bottom of the wound. Damage to skin nerves can mean it is quite painless. The burned skin lacks sensation to touch. A skin graft is usually necessary for significant areas.
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Old 06-27-2012
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wouldn't most of these things be absent?
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Old 06-27-2012
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Dermal appendages .. ??
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Old 06-27-2012
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to my knowledge..ans is dermal appendages-- hair follicles have stem cells which can regenerate the epidermis if they are not wiped out in injury as in 1st and 2nd degree burns and NOT in 3rd degree
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Matched!!!
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Old 06-27-2012
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ok, think i misunderstood the question.........:sorry:

The reason":
if dermal appendages are lost, skin cannot regenerate ..... so grafting is needed. Hope i got it right
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